\begin{thebibliography}{10}
\providecommand{\url}[1]{\texttt{#1}}
\providecommand{\urlprefix}{URL }

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\bibitem{arroyuelo15:SXSI}
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\bibitem{choi12:HadoopXML}
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\bibitem{choi14:labeling_XML_MapReduce}
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\bibitem{cong12:PE_XPath}
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\bibitem{damigos13:XPath_MapReduce}
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\bibitem{dean08:MapReduce}
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\bibitem{grust02:accel_XPath_all_axes}
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\bibitem{HaMa16}
Hao, W., Matsuzaki, K.: A partial-tree-based approach for {XPath} query on
  large {XML} trees. Journal of Information Processing  24(2),  425--438 (2016)

\bibitem{OgTP13}
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\bibitem{wu14:structural_join_MapReduce}
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\end{thebibliography}
